Cyclobutadiene dianion dilithium: a new aromatic ring system

Citation
A. Sekiguchi et al., Cyclobutadiene dianion dilithium: a new aromatic ring system, PHOSPHOR SU, 168, 2001, pp. 51-58
Citations number
11
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Inorganic & Nuclear Chemistry
Journal title
PHOSPHORUS SULFUR AND SILICON AND THE RELATED ELEMENTS
ISSN journal
1042-6507 → ACNP
Volume
168
Year of publication
2001
Pages
51 - 58
Database
ISI
SICI code
1042-6507(2001)168:<51:CDDANA>2.0.ZU;2-V
Abstract
The reaction of tetrakis(trimethylsilyl)- (or cis-diphenyl) cyclobutadiene cobalt complexes with lithium metal in THF at room temperature produced the dilithium salts of tetrakis(trimethylsilyl)- (or cis-diphenyl) cyclobutadi ene dianion, which were isolated as pale yellow (or pale orange) solids sta ble in the absence of air. NMR spectra and X-ray crystallography of these d ianions provide the evidence for an aromatic character with a six pi -elect ron system.